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optimize redundant borrows and escaping paths in NLL #53177

Merged
merged 9 commits into from
Aug 10, 2018
Merged

optimize redundant borrows and escaping paths in NLL #53177

merged 9 commits into from
Aug 10, 2018

Commits on Aug 7, 2018

  1. compute liveness later

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  2. update comment to more accurately describe the limitations

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  3. promote liveness to a directory module

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  4. move liveness_map into the liveness module

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  5. liveness_map: rustfmt

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  6. make it possible to customize the RegionGraph direction

    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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  7. avoid computing liveness when a variable doesn't need it 

    In particular, we skip computing liveness for a variable X if all the
regions in its type are known to outlive free regions.
    @nikomatsakis
    nikomatsakis committed Aug 7, 2018
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Commits on Aug 8, 2018

  1. optimize redundant borrows

    @nikomatsakis
    nikomatsakis committed Aug 8, 2018
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Commits on Aug 10, 2018

  1. don't walk MIR if no local variables need liveness 

    This is true for tuple-stress and html5ever
    @nikomatsakis
    nikomatsakis committed Aug 10, 2018
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